Automatic oil-feed



E. B. CUSHMAN.

. AUTOMATIC OII. FEED.

7 APPLICATION FILED MAY 21, 1919."

Patented Apr. 25, 122.,

zii "r a ig- 12 NITED STATES PATENT OFFICE.

EVERETT B. CUSHMAN, OF TOPEKA, KANSAS ASSIGNOR TO THE PIERSEN MAIVUFAC- TUBING- COMPANY OI 'IOIPEKA, KANSAS, A CORPORATION OF KANSAS.

AUTOMATIC OIL-FEED.

Application filed May 21, 191i). Serial No. 298,683.

To all whom it may concern:

Be it known that I, EVERE'I'I B. CUSHMAN, a citizen of the United States, residin at To eka, in the county of Shawnee and tateof iIansas, have invented certain new and useful Improvements in Automatlc Oil- Feeds; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skllled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, WhlCh form a part of this specification.

This invention relates to lubricating systems for motors and it particularly contemplates the provision of means for maintaining a' constant supply of lubricating 011 m the crank case of a motor.

One of the objects of my invention is to provide a simple and easily operated means for maintaining the oillevel in the crank case of an explosion motor constant, this being an important feature where the splash system of lubrication is employed, and it is also the object of my invention to provide means whereby the level of the oil in a container for augmenting the main supply, may be observed. y

In the drawings,

Figure I is a vertical longitudinal sectional view through a mechanism constructed in accordance with my invention, and

Fi II is a sectional view on the line II- I of Fig. I.

The crank case construction to receive the crank 2 to which may be connected any number of connecting rods 3, one for each piston of the motor, as will be well understood. The crank case is shown in communication with a float chamber 4 through an opening 5, formed by a dia phragm 6 that separates the upper portion of the float chamber from the interior of the crank case and serves as a baflie to prevent actuation of the float upon agitation of the oil by the crank. 1

The top of the float chamber also comprises the bottom-of a cup 7 that supports a container 8 from which the supply of oil 1 may be of any approved f to the crank case is augmented through a port 9, when the valve 9' is lifted by the heel 10 of the float 11 that is pivoted in the float chamber and rises and falls with the rise and fall of oil in the crank case. The container preferably consists of an inverted glass ar, of the well known Mason type, the neck 12 of which is threaded into the collar 13 of the cup 7.

In the bottom of the cup 7 is an orifice 14 through which the container communicates with a filling chamber 15, cast integral with the float chamber and container cup. Supported on and communicating with the filling chamber is a tube 16, which preferably rises parallel with the container and has a removable cap 17. Located within the container 8 is a tube 18, the lower end of which is threaded into the bottom of the cup and extends therethrough to atmosphere at one side of the float chamber and the upper end of which terminates above the oil level in the container, so that when the container is being filled, air may escape through the tube as oil enters through the orifice 15, and so that discharge through the valved port 9 to the float chamber and crank case may be assisted by atmospheric pressure.

, When the parts are assembled as indicated in Fig. I and the oil level in the crank case falls below normal, there will be a drop of the float valve 11 causing the end 10 thereof to unseat the valve 9' and permit oil to flow through the port 9 into the float chamber and through the inlet opening 5 to the crank case until the levelof the oil is restored to normal, whereupon the float will have risen sufii- Specification of Letters latent. Patented Apr. 26, 19210 I ciently to permit the valve 9' to become seated and cut off the supply.'

As the crank splashes through the body of oil in the crank case, there will be more or less agitation in the body of oil but this agitation will not be communicated to the oil in the float chamber to any appreciable degree because the baflie 6 serves as a wall to efl'ectually separate the two chambers while the opening 5 constituting an inlet port, permits the normal level of the oil in the float chamber and the crank case to remain uniform. Any suitable means may be provided for pivoting the float lever in the chamber 4 but I refer to construct the float lever wlth trunmons 19 and 20 and support them by point bearings 21 and 22 to assist in rendering'the valve actuator or. float sensitive in operation and to prevent the float lever from sticking or operating sluggishly in the event that the requirement for opening the valve 9 occurs'onlybetween long intervals.

The device may consist principally of a casting easily fastened to the crankcase 1n the form ofa bracket by means of the fasten in devices 23 and 24. I

, ile the construction which permits a Mason or similar jar to be used asa cohtainer for holding the augmenting supply of 011 IS an important feature of my inventlon, I do I not wish to be limited to the employment of Letters-Patent is;

1. An automatic oil feed comprising. a

float chamber, an inverted glass jar located above the chamber, means separating the jar and float chamber comprising a port, a valve controlling the port, a float in the float chamber controlling the valve, and a tube leading from the top of the jar to atmosphere.

2. An automatic oil feed comprising a float chamber, a cup above the float chamber, having a port, an inverted glass jar carried by the cup, a valve controlling said port, a float in the float chamber controlling the valve, and a filling chamber, the bottom of the cup having communication with the filling chamber and the top of the container having communication with atmosphere, for the purpose set forth. a

3. Ina device of the class described, a float chamber adapted to communicate with the crank case of a motor, a cup above the float chamber and having a port communicating therewith,'a valve controlling said port, a float in the float chamber for actuating. the valve, an inverted container carried by the cup, a tube in the floor of the cup communicating with atmosphere at one end and with the inverted container at the other end, and means for supplying oil to the inverted container.

4. In a device of the class described, a float chamber adapted tocommunicate with the crank case of a motor, a container above the float chamber, a valved partition separating the container from the float chamber, a float in the float chamber for actuating the valve in the partition, and a tube projecting through the partition and communia float in the float chamber for eating with atmosphere at one end and with the container at the other.

5. In a device. of the class described, a float chamber adapted to communicate with the crank case of a motor, a container above the float chamber, a valved partition sepa rating the chamber from the float chamber, I actuating the valve in the partition; a tube projecting through the partition and communicating with atmosphere at one end and with the container at'theother, and a feed tube in open communication with the container and adapted for supplying oil thereto.

6. In combination with a crank case, a float chamber communicating therewith, a depending baflie extending from the top of the float chamber to a point just above the floor thereof, a container above the float chamber, a partition normally closing communication between the "container and the float chamber, a valve in said partition, a

- float for actuating the valve, and a filling ,member in constant communication with the container, comprising a tube co-e'xtensive vertically with the container. 7 In a, device of the class described, a

float chamber adapted to discharge into the crank case of a motor, a recessed member above the float chamber and having an orifice communicating therewith, a removable inverted glass jar received in the recessed member, a float, and'a' float-actuated valve in the orifice for controlling the discharge of oil from th chamber.

8. In a, device of the class described, a float chamber adapted to discharge into the crank case of a motor, a recessed member above the float chamber and having an orifice communicatingtherewith, a removable, inverted glass jar received in the recessed member, a float, a float-actuated valve in the orifice for controlling the discharge of oil from the container into the float chamber, and a filling chamber in constant communication with the jar through an opening in the floor of the recessed member.

9. In a device of the class described, a float chamber adapted to communicate with the crank case of a motor, a threaded recessed member above the float chamber and having a valved orifice communicating therewith, a float, in the float chamber for actuating the valve, an inverted glassq'ar e container into the float engaging'the threaded recessed member, a

verted receptacle connected to said float above the chamber, means separating the chamber, a gravity seated valve controlling jar and float chamber comprising a port, a the sup 1y of liquid from the removable normally seated valve controlling the port, 10 receptac e to said float chamber, and a float and'a float in-the float chamber for unseat 5 for unseating said valve. in said valve. 11. In an automatic oil feed comprising 11 testimony whereof I aflix my signature. a float chamber, an inverted glass jar located EVERETT B. CUSHMAN. 

